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Technical Data Sheet
PartsTable / COMPONENT / M83798/6-8
M83798/6-8 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The M83798/6-8 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-389-7838, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
M83798/6-8
NSN: 4730-01-389-7838
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM83798/6-8
NSN4730-01-389-7838
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M83798/6-8 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT: ANODIZE OVERALL
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.440 INCHES SECOND END IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
SEAT ANGLE: 12.0 DEGREES FIRST END
•
OPERATING PRESSURE: 1250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.640 INCHES SECOND END IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
•
MATERIAL: ALUMINUM ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTANODIZE OVERALL
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.440 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
SEAT ANGLE12.0 DEGREES FIRST END
OPERATING PRESSURE1250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.640 INCHES SECOND END IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
MATERIALALUMINUM ALLOY OVERALL
FLOW ANGLE90.0 DEGREES
THREAD CLASS3B FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
990-12DInterchangeable
interchangeable cross-reference
interchangeable
MS87023-12Interchangeable
interchangeable cross-reference
interchangeable
136-2090-12DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798/6Interchangeable
interchangeable cross-reference
interchangeable
M83798/6-16Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M83798/6-8?
M83798/6-8 is a M83798/6-8.
What parts can replace M83798/6-8?
There are 14 known substitutes for M83798/6-8: 990-12D, MS87023-12, 136-2090-12D and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M83798/6-8?
M83798/6-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-389-7838. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026